22405023 has 12 divisors (see below), whose sum is σ = 33479160. Its totient is φ = 14421456.

The previous prime is 22404989. The next prime is 22405027. The reversal of 22405023 is 32050422.

It is not a de Polignac number, because 22405023 - 2¹⁶ = 22339487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22404987 and 22405005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22405027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42661 + ... + 43182.

It is an arithmetic number, because the mean of its divisors is an integer number (2789930).

Almost surely, 2^22405023 is an apocalyptic number.

22405023 is a deficient number, since it is larger than the sum of its proper divisors (11074137).

22405023 is a wasteful number, since it uses less digits than its factorization.

22405023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85878 (or 85875 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22405023 is about 4733.3944479623. The cubic root of 22405023 is about 281.9130182921.

Adding to 22405023 its reverse (32050422), we get a palindrome (54455445).

The spelling of 22405023 in words is "twenty-two million, four hundred five thousand, twenty-three".